Dates & deadlines

What’s due, when?

Our reminders calendar is populated with all the key dates in the tax year, from filing deadlines to payroll schedules. If you need to find a particular event, use the filters, or browse by date.

31 March 2024

  • Corporation tax

    End of corporation tax financial year.

  • CT61

    End of CT61 quarterly period.

  • Corporation tax return

    Filing deadline for corporation tax return self-assessment form CT600 for period ended 31 March 2023 to be submitted to HMRC.

  • Company accounts filing deadline

    Check your company’s financial year-end. The deadline for both filing your annual accounts and paying your corporation tax bill is usually 9 months after the end of your company’s financial year, while your corporation tax return is due 12 months after the end of the accounting period it covers.

01 April 2024

  • Corporation tax payment

    Corporation tax payment due for year end 30 June 2023, for those companies not liable to pay their liability by installments.

05 April 2024

  • P46 (car) electronic

    Quarter to 5 April 2024.

  • National Insurance Deadline

    Normal deadline to pay voluntary Class 2 or Class 3 NI for 2017/18.

  • Tax Year Ends

    2023/24 tax year ends.

06 April 2024

  • New Tax Year

    2024/25 tax year begins.

07 April 2024

  • VAT return submission and payment (online)

    Month-end or quarter 28 February 2024

What we can do for you

Find out more about the full range of business and tax advisory services Horsfield & Smith offers to businesses and individuals across Greater Manchester and the North West of England and see how we can help you achieve your goals for growth.